A former leader of the Democratic National Committee, he also has served as the mayor of Richmond and the state’s lieutenant governor.

Kaine, 58, gave the Democratic response to President George W. Bush’s state of the union address in 2006 and criticized Bush’s spending increases and tax cuts.

Trump Booed Leaving New York Times

President Elect Donald Trump is booed as he walks through the lobby of The New York Times Building after a 75-minute meeting with Times journalists. The lobby of the Times building is open to the public, and a large crowd had gathered by the time he departed. (Published Tuesday, Nov. 22, 2016)

Born in Minnesota, he spent a year as a Roman Catholic missionary in Honduras and is fluent in Spanish. A lawyer, he specialized in representing people who had been denied housing based on their race or disability.

He is a graduate of the University of Missouri and Harvard Law School.

Supporters gathered Friday afternoon at her first rally since the Republican National Convention rally in Tampa, expecting an announcement from the presumptive nominee. Instead, she used the rally to rail against Donald Trump, who said Thursday night that only he could fix America's problems.

"As I recall, we had a revolution to make sure we didn’t have someone who said 'I can fix it alone,'" Clinton said.

Trump Takes Meetings at His New Jersey Golf Club

President-elect Trump interviewed more than a dozen candidates for his administration at his New Jersey golf club over the weekend, including Mitt Romney, Rudy Guliani, Chris Christie and Kansas secretary of state Kris Kobach, who has been tough on immigration, and others. (Published Monday, Nov. 21, 2016)

Crews were still sweeping confetti from the GOP convention floor as the Clinton campaign signaled an announcement was coming soon. In a tweet Friday morning, her team urged supporters to text the campaign to get first word.

The sources did not say who Clinton will add to the Democratic ticket, adding that the former secretary of state will make her first joint appearance with her running mate Saturday at a campaign rally in Miami.

NBC News reported that the timing of her vice presidential announcement could have changed after a deadly shooting in Germany.

Clinton's Brooklyn staff expected to be told of the pick during a meeting Friday afternoon. Instead, NBC News reported, campaign manager Robby Mook opened the meeting by saying they will have to wait until "an undisclosed time" for the news, per a source in the meeting.

Virginia Sen. Tim Kaine is the leading contender, according to a pair of Democrats familiar with Clinton's search. Active in the Senate on foreign relations and military affairs, he has a reputation for working with both parties as Virginia's governor and mayor of Richmond.

"I'm glad the waiting game is nearly over," Kaine said Thursday, giving away no hints about whether he is Clinton's choice for the spot on her ticket.

Clinton made no mention of her pick during a somber meeting with community leaders and family members affected by the Pulse nightclub shooting in Orlando Friday afternoon. She later visited the site of the rampage that killed 49 people, placing a bouquet of white flowers at the site next to a candle and a framed picture of a cross.

Clinton said gay, lesbian, bisexual and transgender people are more likely to be victims of a hate crime than other people. "It is still dangerous to be LGBT in America," she said. "We have to stand against hate and bigotry."

Trump Holds Series of Meetings With Potential Cabinet Candidates

President-elect Donald Trump is holding a series of meetings all weekend with potential candidates at his New Jersey golf course as he continues to mull over dozens of positions in his upcoming administration. NBC's Chris Pollone reports. (Published Saturday, Nov. 19, 2016)

After the event, Clinton tweeted that she was "monitoring the horrific situation in Munich." Police in the German city warned people to stay indoors and avoid public places Friday as they hunted for the shooter or shooters who opened fire at a shopping mall, killing six people and wounding others.

"We stand with our friends in Germany as they work to bring those responsible to justice," she wrote.

As Clinton prepared to make news, Trump made clear he isn't yet ready to give up the spotlight.

"Hillary is trying to pick her next vice president as fast as possible, because she wants to take away a little of the success that we had at this convention," Trump told supporters at his convention hotel on Friday morning.

Clinton Reflects on Defeat: 'Never, Ever Give Up'

Hillary Clinton is reflecting on her devastating defeat, acknowledging the difficulty of her loss for her supporters and urging them to persevere through the Donald Trump era. She is encouraging her backers to "never, ever give up."
Making her first public appearance Wednesday evening since her emotional concession speech a week earlier, Clinton said: "It's up to each and every one of us to keep working to make America better and stronger and fairer." (Published Thursday, Nov. 17, 2016)

But rather that stay focused on Clinton or reach out to the general election voters he now must court, Trump spent considerable time stoking the fire of his bitter quarrel with Republican former rival Ted Cruz.

The Texas senator refused to endorse Trump in a Wednesday night speech to the Republican convention, drawing boos from the crowd. No matter, Trump said Friday: he didn't want that support anyway.

"What difference does it make?" Trump asked, as he wondered aloud if he could create a super PAC as president to target Cruz. He added: "Ted, stay home. Relax. Enjoy yourself."

Trump also boasted of his TV ratings, his primary victories and other achievements, including winning over his wife, Melania, in a stream-of-consciousness delivery with his vice presidential nominee, Indiana Gov. Mike Pence, standing quietly nearby.

"I don't do anything unless I win," Trump insisted. He promised to work "so hard" and vowed his campaign was "not going to disappear," even though he has no plans to campaign this weekend and no events on his schedule for next week.

In an 75-minute speech Thursday night, Trump made forceful promises to be the champion of disaffected Americans, capping his convention on a high note for the party, not a moment too soon after shows of disharmony and assorted flubs before the four-day closer.

Speaking to "the forgotten men and women of our country," the people who "work hard but no longer have a voice," he declared: "I am your voice." The speech was strikingly dark for a celebratory event and almost entirely lacking in policy details.

Trump pledged as president to restore a sense of public safety, strictly curb immigration and save the nation from Clinton's record of "death, destruction, terrorism and weakness."

WATCH: Obama Welcomes Trump to the White House

President Barack Obama welcomed President-elect Donald Trump to the White House Thursday for a private meeting in the Oval Office. After spending roughly 90 minutes together the pair made a brief statement to reporters. Obama said he was "encouraged" by the wide-ranging conversation the pair had, adding that it's important "we call come together" to face the challenges America faces. Trump added that he "very much looks forward" to dealing with President Obama in the future and will rely on his "counsel" (Published Thursday, Nov. 10, 2016)

"I have joined the political arena so that the powerful can no longer beat up on people that cannot defend themselves," Trump said. He shouted throughout as he read off a teleprompter, showing few flashes of humor or even smiles.

Democrats offered a different assessment. President Barack Obama said Friday the picture Trump painted of the nation "doesn't really jive with the experience with most people."

At a White House news conference with Mexican President Enrique Pena Nieto, Obama said crime rates, especially those for violent crime, are lower than at any time in the past 30 years. He noted violent crime has recently risen in some cities, "but we're not going to make good decisions based on fears that don't have a basis in fact."

During their convention, Republicans were relentless and often raw in demonizing Clinton. As fired-up supporters at Trump's acceptance speech broke out in their oft-used refrain of "Lock her up," the nominee waved them off, and instead declared, "Let's defeat her in November." Yet he also accused her of "terrible, terrible crimes."

Obama: ‘We Are All on One Team’

President Barack Obama, addressing the nation on Nov. 9, urged the country to come together after a divisive election season. “We are all on one team. This is an intramural scrimmage. We are not Democrats first. We are not Republicans first,” Obama said. “We are Americans first. (Published Wednesday, Nov. 9, 2016)

"This is the legacy of Hillary Clinton: death, destruction, terrorism and weakness," he said. "But Hillary Clinton's legacy does not have to be America's legacy."

The Democratic convention in Philadelphia, which starts Monday, is expected to be a more orderly affair. But she'll first make a two-day campaign swing through Florida, with a Saturday event at Florida International University in Miami the likely spot for her first event with her running mate.

Kaine, 58, appeared to be the favorite for her choice, according to two Democrats, who both cautioned that Clinton has not made a decision and could change direction.

Agriculture Secretary Tom Vilsack, a longtime friend of Hillary and Bill Clinton, is still in the mix for vice president, according to one of the two Democrats. Both are familiar with the selection process and spoke on the condition of anonymity because they were not authorized to discuss it publicly.

Hillary Clinton: 'I Still Believe in America'

Hillary Clinton said she felt "pride and gratitude" for her campaign on Wednesday morning, hours after her shocking defeat at the hands of Donald Trump. (Published Wednesday, Nov. 9, 2016)